Kindly guide me about the maintenance of Chevrolet LS exclusive. I am layman about cars. I purchased Chevy LS six month back. I am facing problems in maintaining the car. Kindly give your guidance for below points and any other useful info.
1. Give some contacts of economical mechanics/workshops for quality work in Lahore near Johar town.
2. Auto store from where cheaper spare parts are available.
3. Guide for excellent tuning services. Also guide, is tuning with computer is necessary?

Looking forward for king guidance.